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PDF ZHT431 Data sheet ( Hoja de datos )
| Número de pieza | ZHT431 | |
| Descripción | ADJUSTABLE PRECISION ZENER SHUNT REGULATOR | |
| Fabricantes | Zetex Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ZHT431 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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ADJUSTABLE PRECISION
ZENER SHUNT REGULATOR
ISSUE 2 – FEBRUARY 1997
DEVICE DESCRIPTION
The ZHT431 is a three terminal adjustable
shunt regulator offering excellent
temperature stability and output current
handling capability up to 100mA. The device
offers extended operating temperature
range working from -55 to +125°C. The
output voltage may be set to any chosen
voltage between 2.5 and 20 volts by
selection of two external divider resistors.
The devices can be used as a replacement
for zener diodes in many applications
requiring an improvement in zener
performance.
SCHEMATIC DIAGRAM
V ref
ZHT431
FEATURES
• Surface mount SO8, SOT89, SOT223
and SOT23 packages
• TO92 package
• 2% and 1% tolerance
• Maximum temperature coefficient 67
ppm/°C
• Temperature compensated for
operation over the full temperature
range
• Programmable output voltage
• 50µA to 100mA current sink capability
• Low output noise
• Wide temperature range -55 to +125°C
APPLICATIONS
• Series and Shunt regulator
• Voltage monitor
• Over voltage/ under voltage protection
• Switch mode power supplies
VZ
G
nd
4-28
1 page  
ZHT431
DC TEST CIRCUITS
Input
IL
Input
VZ
I zoff
Fig 1 – Test Circuit for Vz=Vref Fig 2 – Test Circuit for Vz>Vref
Fig 3 – Test Circuit for Off
State current †
NOTE
† Since the “Off State” disables all internal circuitry including leakage control, operating in this
mode at high temperature is not recommended.
4-32
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet ZHT431.PDF ] | |
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| Número de pieza | Descripción | Fabricantes |
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